Ground line marker



June 9, 1925. y1,541,328

- A. J. DALBY GROUND LINE MARKER Filed Jan. 30, 192% Patented June 9, i925.

ARTHUR aosnrn DALBY, or consenso, -Nnan svnnn'Y, sonner wams,

ASTRALIA.

Application filed-January 30, 1924. 'Serial No. 689,437.

To all whom z' may concern:

Be it known that l, ARTHUR Josnri DAL-Br, a subject of the King of Great Britain, resid-ing` `at Park Avenue, Concord, near Sidney, in the State of New South Vf ales and Commonwealth lofAustralia7 sheet-metal worker, have invented a ne*v and useful impr ved Ground Line Ma lier, of 'which the following is a speciiicatioi'i.

This invention reiates to an improved ground line-marker that is to say a machine for marking lines upon flat surfaces and though devised for vground courts and bases for games generally it will be vfound of especial utility for hard courts for tennis and-also for wherever Vlong distinct flines are required to be shown on the ground and on floors and other extensive lflat surfaces. And this improved vground line-iiiarker 'is of simple and durable construction facile and eective in operation and as Vwell co1nparatively cheap in i'rst cost in 'maintenance and in use.

rlhis improved ground line-marker has a wheeled frame or carriage vwith "the rear wheels close to a container and with the fore wheels extended forwardly medial-ly and set a little farther apart than the width of the line to be marked and so that 'they and the ground through the space between them will be in view of the operator. The container is open-topped and more or less arcuate at bottom 'and is divided by a perforated vertical diaphragm. There yis an oscillating agitator in one compartment and there is an oscillating mixer or briushin thc other compartment both operatably 'connected to the wheels. `Andfrom the container bottom 'is an outlet (with a regulatable valve) to a hinged launder underneath having a nozzle Vor liner brush and this launder has convenient control devices for raising and lowering its nozzle end and has connection to vthe container outlet valve.

rThis invention is :carried into4 practical effect by means of the improved ground line-marker preferably constructed as now described with reference to the drawings accompanying and formingpart of this complete specification.

Figs. l, 2 and 3 are respectively a side elevation a medial longitudinal elevation and a plan of this improved ground line-marker while Figs. 4, 5, 6 and 7 are details of Same.

rThe carriage 4having side members -8 inwardly :set Vat the fore end 9 has front and rear axles 10 and l1 respectively mounted whereon lare 'a `couple of free wheels i2 and 12' and/each wheel has Ia scraper or cieaner 13 afliXed to thc side members' 8. The container 14a is ybolted to the side yniembers and its arcuate one piece ends and lbotitom 14 is joined to side walls 15 sloping very slightly outwardly and has its rear inwardly flanged to form splash-guard 16.- rIhe perforated diaphragm if? forms gthe container into two compartments 1S and i9.,

A shaft 20 'transversely about centrally across the container has bearings 2l vat the side walls 15 and at one end isr bent to form a crank 22 which crank 22 is connected by lrod 23 to a crank Vpin 24 ori-one Aof the wheels 12a. A. radial arm 25 fast to the shaft 2O carries a brush 26 and another ra-y dial arm '27 set or bent 5to dip into 'compartment. 19 carries on `its end 'an agitator bar or blade 28 adapted to o'scillate in compartment 19 but preferably in a withdrawa'b'le wire or `like Ystrainer 29 therein. ln the bottom 14 of the compartment i8 is an oriiice 30 within the range of oscillation of the `brush 2G and said 'orifice 30 has a valve 31 adapted to be operated as hereinafter described. v i

A launder. 32 is hinged at 33 to the -container 14EL and narrows from its hinged end 33 to a `discharging end 34 having` tafper nose 35 whose top wall 3? 'has s-lot 37 there in and said launder has adjustably fast thereto the stem of'va-lve 8l. vrThe nozzle BS of rubber 'or the like flexible material has au orilice 89 with para'llei sides and overhang top so that its width is arbitrarily fixed and 'consequently that ofthe delivered niariring fluid. This nozzle 38 is ai'iixed to the launder `end 34 by means ef resilient holder 40 and wing nutted screw 4l whose square shank is fitted in the slot 37 of top wall 36. But if desired a -U--shaped vbrush such as 42 may be substituted for the nozzle 38.

A propelling hand bar 43 having cross bar of inverted U-shape is ybolted to the container walls l5. A control rod 44 from the disch-arge end 34 of the launder 32 passes through the hand bar 45 and has outwardly thereof a spring 46 below a tension nut 47 screwed on it as also preferably is a push nob 48.

In use the launder 32 is kept normally in elevated inoperative position by spring 46 whose tension is set and regulated by nut 47 and in this position the valve 31 is closed tightly on the orifice 30. YWhen the machine is being propelled so as to mark the ground say a tennis court, revolution of the draught wheels 12 and 12 with consequent movement of the crank 22 causes the agitator 28 and the brush 26 to be oscillated'in the respective compartments 18 and 19. rllhe strainer 29 is charged with a powder as say lime and the compartments 18 and 19 with water and thus the fluid and the lime commino'le and the oscillating agitator 28 compels a thorough nixing and no escape of large particles into compartment 18 can occur. ln the latter compartment oscillating brush 26 keeps the fluid stirred and flowable and the outlet orifice 30 clear. The position of the nozzle 38V in relation to the court and the amount of marking fluid flowing through said orifice 30 and launder 32 is governed by depression of the control rod 44 to the limit allowed by the adjusting nut 47 while the track to be marked is easily followedby keeping the front wheels 12 one on either side of a guiding line or thread.

On releasing the control rod 44 the spring 46 raises the launder 32 and the valve 31 closes the orifice 30 cutting off the discharge ofthe marking fluid. n

VvWhat 1 claim as my invention and desire to secure by Letters Patent is Y 1. An improved ground line-marker comprising a carriage, a container thereon having two compartments, one of said compartments having an outlet, an agitating device, and aVY mixing device operatable by the draught wheels for mixing and agitating powder and fluid, said mixing device movable over said outlet, combined therewith an under launder having devices for adjusting its inclination having a discharge end and nozzle having control devices for raising and lowering itself and having devices for regulating a flow of the contents from said container on adjustment of the inclination of said launder as and for the purposes set forth substantially as herein described and explained.

2. 1n and for improved ground linemarker the combination with a container divided into two compartments by a perforated diaphragm, of an oscillating agitator operatably connected to la crank on one of the draught wheels in one compartment and oscillating brush mixer in the other compartment operatably connected to a crank on one of the draught wheels an outlet orifice in the track of the brush mixer and and devices Vfor permitting and directingYY a discharge from said container and devices for aligning on the ground said discharge as and for the purposes set forth substantially as herein described and explained.V

3. In and for an improved ground linemarker the combination with a carriage supporting a container and having the front wheels set apart the widt-h of the desired marking line of devices for mixing and agitating water and powder in said container a hinged launder having a tapered slotted nose and a flexible nozzle a flexible holder for said nozzle an outlet orifice in said container with valve a connection between said valve and said hinged launder and control devices for raising and lowering said launder' and operating said valve as and for the purposes set forth substantially as herein described and explained.

4. In and for improved ground linemarker the combination with carriage having side members 8 front axle 10 rear axle 11 wheels 12 and 12a of a container having one pieceends and bottom 14 side walls 15 perforated diaphragm 17 discharge `orifice 30 an under hinged launder 32 having connection to said valve 31 and devices for raising and lowering the nozzle end of said launder 32 as and for the purposes set forth substantially as 'herein described and explained and asillustrated in the drawings.

5. In and for improved ground line marker the combination with a carriage and a container having compartments 1S and 19 of a crank shaft 20-22 connecting rod 23 crank pin 24 radial arms 25 and 27 carrying brush 26 and agitator 2S respectively discharge orifice 30 with valve 31 and a launder 32 connecting to the said valve 31 asy and for the purposes set forth substantially as herein described and explained and as illustrated in Vthe drawings.

G. In and for improved ground linemarker the combination with a wheeled container having al discharge orifice 8O with valve 31 of a hinged launder 32 having a discharge end 34 taper nose 35 a flexible nozzle 88 having holder 40 and control devices for operating said launder substantially as herein described and explained and as illustrated in the drawings.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR JOSEPH DALBY.

Witnesses:

AUTHER S. CAVE, W. HoowoRTH. 

